Status	Description	Organism	Genes	References
	protocatechuate 3,4-dioxygenase beta chain	Agrobacterium fabrum	pcaH pcaG
	protocatechuate 3,4-dioxygenase	Caulobacter crescentus	pcaH pcaG
	gallate:oxygen 3,4-oxidoreductase	Pseudomonas putida	pcaG pcaH
	protocatechuate 3,4-dioxygenase alpha subunit	Streptomyces coelicolor	SCO6699
	protocatechuate 3,4-dioxygenase beta subunit	Streptomyces coelicolor	SCO6700